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METHOD AND APPARATUS FOR DETERMINING A RESPIRATION SIGNAL

  • US 20120296221A1
  • Filed: 02/07/2011
  • Published: 11/22/2012
  • Est. Priority Date: 02/11/2010
  • Status: Active Grant
First Claim
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1. A method for determining a respiration of a subject 005) comprising the steps of:

  • generating, with a single multi-axial accelerometer positioned on a body of the subject, accelerometer signals indicative of the acceleration of the subject along different spatial axes,calculating a vector magnitude signal of the acceleration of the subject along the different spatial axes from the accelerometer signals,identifying from the vector magnitude signal a non-respiratory motion contribution to the acceleration along the different spatial axes which non-respiratory motion contribution is not caused by the respiration,determining a respiration signal indicative of the respiration of the subject by filtering the non-respiratory motion contribution from at least one of the accelerometer signals.

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